XmStringConcat — A compound string function that appends one string to another "XmStringConcat" "compound

XmStringConcat  copies  s2  to  the  end  of  s1 and returns a copy of the resulting compound string. The
       original strings are preserved.  The function will allocate space to hold the returned  compound  string.
       The  application  is  responsible  for  managing  the  allocated  space.  The application can recover the
       allocated space by calling XmStringFree.

       s1        Specifies the compound string to which a copy of s2 is appended

       s2        Specifies the compound string that is appended to the end of s1

XmStringConcat — A compound string function that appends one string to another "XmStringConcat" "compound
       string functions" "XmStringConcat"

XmStringCreate(3) and XmStringFree(3).

                                                                                               XmStringConcat(3)

       Returns a new compound string.

       #include <Xm/Xm.h>
       XmStringXmStringConcat(
       XmStrings1,
       XmStrings2);